The difference between precision steel pipes and seamless steel pipes

Precision steel pipes and seamless steel pipes, as two widely used pipes in the industrial field, each have unique characteristics

Precision steel pipes and seamless steel pipes, as two widely used pipes in the industrial field, each have unique characteristics and uses. They have significant differences in manufacturing processes, physical properties, application fields, and other aspects. The difference between these two types of steel pipes will be discussed in detail below.

1、 Manufacturing process

Seamless steel pipe, as the name suggests, is made by hot rolling, cold rolling, or cold drawing solid round steel or steel ingots. Its biggest feature is that there are no welding seams on the surface of the pipe. In the manufacturing process, the steel ingot is first heated to a suitable temperature, and then perforated through a perforating machine to form a billet. Subsequently, the billet undergoes multiple passes of rolling or drawing, gradually forming into steel pipes of the desired size. Finally, steel pipes need to undergo processes such as heat treatment, straightening, and finishing to achieve higher quality standards.

The manufacturing process of precision steel pipes is more complex and refined. The production raw materials for precision steel pipes are usually high-quality cold-rolled steel plates or hot-rolled steel plates. Through precise rolling processes and precise process control, the pipes have higher dimensional accuracy and surface smoothness. During the rolling process, steel pipes need to undergo multiple passes of rolling and precise process adjustments to ensure that their internal and external diameters, wall thickness, and other dimensional parameters meet high-precision requirements. In addition, precision steel pipes also need to undergo strict surface treatment and testing to ensure that their surface quality and performance meet standards.

2、 Physical performance

There are also differences in physical properties between seamless steel pipes and precision steel pipes. Seamless steel pipes have good pressure resistance and corrosion resistance, can withstand high pressure and temperature, and are not prone to problems such as leakage and rupture. At the same time, the manufacturing process of seamless steel pipes is simple and the cost is low, so they are widely used in some occasions with high cost requirements.

In contrast, precision steel pipes have higher precision and surface quality. Its inner and outer wall dimensions have high precision and good surface smoothness, which can meet various high-precision and high-performance requirements. In addition, precision steel pipes have excellent mechanical and processing properties, can withstand large tensile and compressive forces, and are easy to process and form. These characteristics make precision steel pipes more reliable and stable in manufacturing high-precision parts.

3、 Application Fields

Seamless steel pipes and precision steel pipes also differ in their application fields. Seamless steel pipes are widely used in fields such as petroleum, natural gas, chemical, power, and construction as pipeline materials for transporting fluids, withstanding pressure, and supporting structures. Due to the characteristics of its manufacturing process, seamless steel pipes can produce large-diameter, high-pressure, and high-strength pipelines, suitable for various complex working conditions.

Precision steel pipes are mainly used in fields such as automotive, machinery, petroleum, chemical, and energy as high-precision and high-performance component materials. Its high precision and high-quality characteristics make precision steel pipes more reliable and stable in manufacturing high-precision parts. For example, in the automotive industry, precision steel pipes are widely used in the manufacturing of key components such as engines, transmissions, and chassis; In the mechanical industry, precision steel pipes are used to manufacture various high-precision components such as transmission shafts and oil cylinders.